Gemstone

The ornamental design for a gemstone, as shown.

FIG. 1 is a top view of a gemstone showing my new design;

FIG. 2 is a side view of a gemstone showing my new design; and,

FIG. 3 is a bottom view of a gemstone showing my new design.

Patent	Priority	Assignee	Title
D551590,	Mar 21 2006		Cut for a diamond
D656428,	Jan 12 2011	Dayekh Jewellery, besloten vennootschap met beperkte aansprakelijkheid	D brilliant cut
D883133,	Apr 22 2018		Gemstone

Patent	Priority	Assignee	Title
6363745,	Dec 01 1998	Tiffany and Company	Cut cornered square mixed-cut gemstone
36103,
D420935,	Nov 04 1996	Ambar Diamonds Inc.	Gemstone
43724,
D457830,	Oct 16 2000	Schachter & Namdar Polishing Works, LTD	Precious stone

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